Creating Quick Mushroom Spaghetti is straightforward. Follow these steps for a delightful meal:

1. Boil Pasta: In a large pot of salted water, cook the spaghetti according to package instructions. Drain and set aside.
2. Sauté Onions: In a large skillet, heat olive oil over medium heat. Add the chopped onion and sauté until translucent, about 3-4 minutes.
3. Add Garlic: Stir in the minced garlic. Cook for 1 minute until fragrant.
4. Cook Mushrooms: Add the sliced mushrooms to the skillet. Sauté until they release their moisture and become golden brown, about 5-7 minutes.
5. Add Broth and Cream: Pour in the vegetable or chicken broth, followed by the heavy cream. Stir well to combine and bring to a simmer.
6. Season: Add red pepper flakes, salt, and pepper to taste. Allow the sauce to thicken slightly, about 2-3 minutes.
7. Combine Pasta and Sauce: Add the drained spaghetti to the skillet, tossing to coat evenly with the sauce.
8. Add Cheese: Stir in the grated Parmesan cheese until melted and incorporated.
9. Serve Immediately: Remove from heat and garnish with chopped parsley before serving.

Following these steps will guide you to create an incredibly tasty dish the entire family will enjoy.